[Q]any problem after 4.3 update?

I have updated my note2 to 4.3 recently, it seems like more smooth when moving around the screen, but it is kinda laggy whenever i try to unlock the screen and switching between apps, sometimes within the app it freezes for a while to start.

is this problems occurs to myself only or others having trouble too after they have updated to 4,3?

and if there's any solution regarding this issue please share the knowledge.

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